How does the EV3 Ultrasonic sensor works? Pro Preview

The EV3 Ultrasonic sensor is used to measure distance. We can use the sensor to detect whether there is a wall or some other solid object ahead and how far it is. But to master it usage, first we should know how does it work

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  • #941
  • 17 Aug 2018

How does the ultrasonic sensor work? - Many of you say the ultrasonic sensor resembles a head with two eyes. Generally speaking:

  • One eye emits an ultrasonic wave at a very high speed. 
  • When this wave hits the target, the sensor receives the wave reflected back from the target. 

The second eye receives the reflected wave. The sensor measures the distance to the target object by measuring the time between the emission and reception of the wave. The more the time passed is, the further the target is.    

 

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